Energy-efficient retrofitting of multi-storey residential buildings

Abstract

Purpose

Sustainable retrofitting of aged buildings plays a significant role in reducing energy demands and greenhouse gas emissions. This study aims to assess the performance and effectiveness of energy retrofit measures (ERMs) for an archetype of aged multi-storey residential buildings.

Design/methodology/approach

The methodology consists of three parts, namely, a desktop study including the selection of a case-study building and identification of ERM options for the building; development of a computer model to simulate the building’s energy use in the baseline scenario and different scenarios of ERMs; and evaluation of the ERMs based on energy-saving rate.

Findings

Among the 13 ERMs tested, lighting-related ERMs were found to be optimal measures while window fin is the least suitable option in terms of energy saving. Based on the research findings, a two-level retrofitting framework was developed for aged multi-storey buildings.

Research limitations/implications

Future studies may take a similar approach of this study to develop retrofitting frameworks for other types of buildings, and further research paper can be extended to study retrofitting for buildings in a district or a region.

Practical implications

The findings of this study can serve as a reference for building owners to select effective ERMs for aged multi-storey buildings, which invariably exist in developed cities.

Originality/value

This study presents a pioneering work where an energy model and a building archetype were used to analyze the energy savings of a variety of ERMs that are applicable to aged multi-storey buildings.

Citation

Sing, M.C.P., Chan, V.W.C., Lai, J.H.K. and Matthews, J. (2021), "Energy-efficient retrofitting of multi-storey residential buildings", Facilities, Vol. 39 No. 11/12, pp. 722-736. https://doi.org/10.1108/F-08-2020-0094